What is the port of input?
Input is the input port.
Nine-pin serial port
The RS-232 interface, one of the communication interfaces on a personal computer, is an asynchronous transmission standard interface established by the Electronic Industries Association (EIA). Usually the RS-232 interface appears in the form of 9 pins (DB-9) or 25 pins (DB-25). Generally, there are two sets of RS-232 interfaces on personal computers, called COM1 and COM1 respectively. COM2
There are many devices that use this port to transmit data.
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